Home / 427,786.78-642,310.98-238,616.76

Finding the Fourth Proportional to 427,786.78, 642,310.98 and 238,616.76

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Solution

The fourth proportional to 427,786.78, 642,310.98 and 238,616.76 is: 358,277.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,786.78 : 642,310.98 = 238,616.76 : x
  2. Step 2: Convert to fraction form
    427,786.78/642,310.98 = 238,616.76/x
  3. Step 3: Cross multiply
    427,786.78x = 642,310.98 × 238,616.76
  4. Step 4: Simplify right side
    427,786.78x = 153,266,164,960.03
  5. Step 5: Solve for x
    x = 153,266,164,960.03/427,786.78
  6. Step 6: Final answer
    x = 358,277.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.